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SHT15
The SHT15 is a temperature and humidity sensor from Sensirion. The SHT15 digital humidity and temperature sensor is fully calibrated and offers high precision and excellent long-term stability at low cost. The digital CMOSens Technology integrates two sensors and readout circuitry on one single chip.
Here is a demo program using the SHTx library that prints out the temperature and humidity
Import programSHT15_Example
Example program for the SHT1x sensor driver
/**
* Copyright (c) 2010 Roy van Dam <roy@negative-black.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "mbed.h"
#include "SHTx/sht15.hpp"
Serial pc(USBTX, USBRX);
DigitalOut busy(LED1);
// I used p9 and p10 here but you
// can use any other GPIO as well.
SHTx::SHT15 sensor(p9, p10);
int
main() {
// Speed things up a bit.
sensor.setOTPReload(false);
sensor.setResolution(true);
while(1) {
busy = true;
sensor.update();
busy = false;
// Temperature in celcius
sensor.setScale(false);
pc.printf("Temperature [ %3.2f C ]\r\n", sensor.getTemperature());
// Temperature in fahrenheit
sensor.setScale(true);
pc.printf(" [ %3.2f F ]\r\n", sensor.getTemperature());
// Relative Humidity
pc.printf("Humdity [ %3.2f %% ]\r\n\n", sensor.getHumidity());
wait(5);
}
}

